Signature-roll



M. DAVIS.

SIGNATURE ROLL.

APPLICATION-FILED SEPT.2. 1919.

1 ,3 69,5 1 9, Patented Feb. 22, 1921.

a'wuemtoz UNITED STATES PATENT OFFICE.

SIGNATURE-ROLL.

Specification of Letters Patent.

Patented Feb. 22-, 1921.

Application filed September 2, 1919. Serial No. 320,979.

T 0 all whom it may concern Be it known that I, MOLLIE DAVIS, a citizen of the United States, residing at Spokane,,in the county of Spokane and State of \Vashington, have invented certain new and useful Improvements in Signature-Rolls, of which the following is a specification.

The present invention relates to improvements in signature rolls forming part of printing machines of the duplicating type or style in which numerous copies of letters are of the signature that is printed on the letter by making the imprint more like the natural and real signature of the writer, and to some extent eliminating the mechanical appearance of the signature- This is accomplished by utilizing in connection with the well known and standard signature roll, a resilient or elastic covering for'the roll which covering bears the signature ribbon or strip attached thereto, and detachable therefrom when required.

In the accompanying drawings I have illustrated one complete example of the physical embodiment of my invention, the parts being combined and arranged according to the best mode I have so far devised for the practical application of the principles of my invention.

Figure 1 is a perspective View of a well known type of signature roll for duplicating machines, having the subject matter of the present invention applied thereto. v

Fig. 2 is a perspective view of the roll with the elastic casing and resilient signature ribbon in use thereon. Fig. 3 is a transverse sectional view through the roll, elastic casing and resilient signature ribbon. e

In order to fully illustrate the invention I have utilized the standard roll 1 with its axis 2 andend pulleys or Wheels 3, 3 as they are utilized on the duplicating machines. To the roll 1 I add the rubber casing or tube 4,

which is slipped over its end and shaped to conform to the cylindrical shape of the signature roll, the tube being of elastic material or rubber and is held on the roll by friction. In some instances it may be necessary to roughen the surface of the roll 1 in order to increase the friction between the inner face of the rubber casing and the outer face of the roll 1, and thus retain the casing in stationary position with relation to the roll 1.

The signature is inthe nature of a rubber stamp and is carried on the rubber strip or ribbon 5, rubber cement or glue being utilized to retain the strip in place on the roll or casing.

The ribbon of course is removable, and the cement may be dissolved by any of the well known solutions for the purpose, as by the application of gasolene, and the signature strip may then be pulled from the softened cement. After the roll, or its elastic casing has been cleaned, a new signature can be applied and secured by the application of cement, the proper location, aline- 'ment' and position of the strip being determined by the operator. Ordinarily the fric tion of the elastic or rubber casing on the permanent roll will be sufiicient to retain the casing in workmanlike position on the roll 1, but if greater friction is re uired, the surface of the roll 1 may be roug ened as before stated. It will be apparent that the signature printed with the resilient signature ribbon on the elastic roller casing willbe produced in a natural and usual manner, without the likelihood of cutting the paper or punching through the letters of the name, as fre-' quently happens when the metal signature plate is used, often due to carelessness of the operator or attendant. The roller of course may be adjusted to bear with greater or less tension on the letter paper, and the signature may be imprinted with a degree of accuracy that will give the appearance of the natural hand writing for the signature.

What I claim is- In a signature roll for use in .'a printing machine, the combination therewith of a detachable, elastic cylindrical casing, slidable and retained thereon by friction, and 

